Using street view, you can often see "Social Security" on a building or sign.

Social Security Office Directions and Notes :

OFFICE LOCATED NEAR THE CENTER COURT OF PASEO NUEVO SHOPPING CENTER NEAR THE MOVIE THEATERS. 75 MINUTE FREE PARKING AVAILABLE AT THE SHOPPING CEN TER AFTER 10AM. 2.5 HOURS FREE DISABLED PARKING AVAILABLE AFTER 10AM. FROM US 101 TAKE CARRILLO EXIT AND HEAD EAST TOWARDS DOWNTOWN. TURN RT ON CHAPALA 1 1/2 BLOCKS TO SHOPPING CENTER PARKING ON THE LEFT. ADDITIO NAL PARKING IS AVAILABLE IN NEARBY PUBLIC LOTS.

Santa Barbara Social Security Office Notes

You can do things like signup for Medicare
online at ssa.gov.
Hours of Social Security offices were extended in March, 2015.
Almost all Social Security offices in the continental US have hours
of 9:00 to noon on Wednesdays, and 9:00 to 4:00 on other weekdays.
See if you can get an appointment by phone. Fridays may be less
crowded.